Concrete finishing device



July 31, 1962 o. M. BAXTER CONCRETE FINISHING DEVICE 2 Sheets-Sheet 1Filed. April 6, 1959 INVENTOR O. M. Baxter FIG.3.

BY WW EM ATTORNEY July 31, 1962 o. M. BAXTER 3,046,855

CONCRETE FINISHING DEVICE Filed April 6, 1959 Z Sheets-Sheet 2 INVENTORATTORNEY United States Patent 3,046,356 CONCRETE FINISHING DEVICE OrionMartin Baxter, 4802 Roosevelt, San Antonio, Tex. Filed Apr. 6, 1959,Ser. No. 804,480 1 Claim. (Cl. 94-48) The present invention relates toconcrete finishing device and has for an object to provide a device forrough or fine concrete finishing in which new forms of handlearrangements provide adjustability for various new modes of operation.

A further object of the invention involves a new form of frame overwhich expanded metal or other suitable concrete contacting material isplaced or stretched.

A still further object of the invention is to provide the finishingmember with certain new arrangements of connecting means by which theshafts of handles may be accommodated to the finishing member in variousangular relationships with means for connecting the handles together inone position for presenting a new manual approach for producing a novelform of manipulation of the instrument and with new case in itshandling.

With the foregoing and other objects in view, the invention will be morefully described hereinafter, and will be more particularly pointed outin the claim appended hereto.

In the drawings, wherein like symbols refer to like or correspondingparts throughout the several views:

FIGURE 1 is an isometric view of one form of a concrete finishing deviceconstructed in accordance with the invention with the parts collapsedand assembled in small compass for packing and transportation.

FIGURE 2 is a similar view showing the device set up for operation withthe handles in one assumed position.

FIGURE 3 is a top plan view of the finishing member showing the stubshanks of the handle shafts pivoted thereto.

FIGURE 4 is a view similar to FIGURE 2 but with the handles turnedangnlarly into a different position for a difierent mode of operation.

FIGURE 5 is a cross sectional view taken on an enlarged scale on theline 6--6 in FIGURE 3.

FIGURE 6 is an isometric View of a modified form of device.

FIGURE 7 is a fragmentary sectional view taken through one of the stubshanks and tubular handle shafts and illustrated in detail a form ofretaining device.

Referring more particularly to the drawings, 10 designates an expandedmetal or other base which is stretched or affixed over a metal or otherframe comprising the following members: longitudinal outside bars 11 and12 and longitudinal inside bars 13 and 13 which bars are spaced apartand connected by end bars 14 and 15.

These various bars 11-15 are set on edge with the base 10 secured to thelower edges thereof and center and side flat 'bars 16, 17 and 18 laidcrosswise over the upper edges of the bars and affixed thereto as bywelding or otherwise.

The center flat bar centrally thereof supports a center socket 19 whichis internally threaded. The side bars 17 and 18 support centrallythereof pairs of upstanding per forated ears 20 and 21 which receivetherebetween the stub shanks 22 and 23 hinged to the pairs of ears 20and 21 by pivot bolts 24 and 25 having nuts 24 and 25 threaded thereonfor tightening the stub shanks 22 and 23 in various angular positions orfor relieving the pivot bolts free of any tight frictional restraint sothat the stub shanks 22 and 23 may freely pivot about the same in theoperation of the tool.

Tubular shafts 26 and 27 are telescoped with the stub shanks 22 and 23to provide a longitudinal and also an angular adjustment. The adjustmentmay be maintained Patented July 31, 1962 by set screws 28 and 29rotatable by means of connected handles 30, 31 and lock nuts 32, 33. Attheir outer ends the shafts 26, 27 terminate in curved handles 34, 35.At its free end one of the handle members 35 is provided with a socketor attachment member 36 for the shank 37 which projects forwardly [fromthe free end of the other curved handle 34. A set screw 38 on the socket36 may bind into the shank 37 to maintain the coupling, the set screwhaving a handle39 for this purpose. The set screw is also provided witha lock nut 40 threaded thereon and positioned to jam against the socketside wall to maintain the adjustment. I

Referring more particularly to FIGURE 6, a gooseneck fitting has athreaded shank 42 for screwing into the internally threaded centersocket 19. At its other end the gooseneck fitting 41 is also providedwith a threaded shank 43 for threading into a handle shaft extension 44.A board 45 is attached beneath the base 10 in any suitable manner andpreferably extends beyond the ends of the finishing member.

FIGURE 1 shows the device in a collapsed position in which it occupies aminimum of space. The stub shanks 22 and 23 are folded down toward oneanother substantially parallel with the finishing member while thebandles and their shafts are completely disconnected from the stubshanks and laid on the upper edges of the bars 11, 12, 13 and 1 3.Substantially all parts are accommodated within the confines of theouter longitudinal members 11 and 12 and the end members 14 and 15.

FIGURE 2. shows the stub shanks 22 and 23 erected with the handle shafts26 and 27 telescoped therewith and with the curved handles turnedmutually together and atfixed by the shank 37 and socket 36.

FIGURE 4 shows the curved handles 34, 35 disassodated and turned atright angles to the position of FIG- URE 4, both handles projecting inthe same direction. This is permissible by loosening the set screws 28and 29 and rotating or angularly turning the shafts 26 and 27 on thestub shanks 22 and 23. Thereafter the handles 30, 31 are rotated toafiix the set screws so that this adjustment may be secured.

In FIGURE 6 the stub shanks 22 and 23 are shown as having been rotatedoutwardly to positions substantially parallel with the finishing memberin which positions they constitute weight factors tending to balance thetool which in this instance is connected to a single handle extension 44through a single gooseneck 41 connected to the single central socket 19.Thus the long finishing member including its board 45 may have atendency to rock about the center socket 19 or the gooseneck and handleconnection at this single central point and a condition of stability isafforded by the stub shanks 22 and 23 when rotated to the positionindicated in FIGURE 6. At 44 is indicated only one handle extension ofwhich there may be several jointed together in any suitable manner as bythe screw shanks 43. The base with the center handle attachment asillustrated in FIGURE 6 and the handle extensions 44- permit the useover large areas without the finisher having to walk on the concrete. Itwill be understood that, in connection with this FIGURE 6, that thegooseneck 41 may be bent to any desired angles and the handle extensions44 will accordingly extend ofi to low or high points to permitaccommodation to various positions and desires of the operator.

It will thus be seen that the invention provides jointed and movableconnections, imparting great flexibility which enables the levelingdevice to be used at difierent angles and in different situations all ofwhich will be appreciated by those skilled in the art and Willcontribute to an easier manipulation of the instrument and moresatisfactory operations upon the concrete.

In the collapsed position of FIGURE 1, the device may be carried in anautomobile or by hand on a bus. Together with a gooseneck the deviceinvolves only four pieces and its weight may be restricted toapproximately twenty pounds. a

- The metal frame covered by the expanded metal is used to force thefines (sand and cement mortar and fine stones that are forced tothesurface) and water to the surface on a freshly poured concrete slab orsidewalk and will thus make the surface easier to finish.

The device will get into the corners easily and is light and fast. Itis-equally applicable to four feet sidewalks or wide slabs.

The device is easy to carry in'the position of FIGURE 1 as itisapproximately 47" by 8'! wide. 7

Although I have disclosed herein the best form of the invention known-tome at this time, I reserve the right to all such modifications andchanges as may come within the scope of the following claim.

What is claimed is:

. A concrete working device-for urging large aggregate toward subgradeand fines to the surface for subsequent finishing comprising (a) anaggregate separating member having opening therethrough and adapted toenter the plastic mix, said openings permitting fines to Work their wayto the surface through the openings of said member,

(b) spaced parallel pivots mounted on the member,

(c) stub shanks pivoted on said pivots,

(d) a pair of handle members each having a straight lower end and curvedupper end,

(a) the lower end of each handle member being hollow and receiving oneof said stub shanks therein,

(1) means for securing each said stub shank in one of said handlemembers in one of a plurality of angularly related positions wherebysaid handle ReferencesCited in the file of this patent UNITED STATESPATENTS Schottler Oct. 10, Rook Nov. 10, Abram June 29, Eggert Feb. 25,Weber Feb. 7, Tullis Apr. 25, Mall -a July 30, Tamblyn Dec. 22, JacksonDec. 22, Fischer July 25, Jackson Sept. 21, Jackson -2 Nov. '9, Feeleyet al July 5, Jorgensen Jan. 23, Clement Apr. 7, Ferguson May 22,Freeman May 13, Alessio Aug. 4, Kadlec Mar. 15, Gresham Aug. 16,

FOREIGN PATENTS Canada July 6,

